A fractal comminution approach to evaluate the drilling energy dissipation
A fractal comminution approach to evaluate the drilling energy dissipation
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DOI：
10.1002/nag.209
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发表时间：
2002-04-25
影响因子：
4
通讯作者：
Pugno, N
中科院分区：
文献类型：
--
作者：
Carpinteri, A;Pugno, N
用分形法对钻削粉碎过程进行了理论和实验分析。发展了第三粉碎理论的扩展，以评估该过程中的能量耗散：它发生在表面和体积之间的分形域中。从实验上观察到了材料“量子”的理论假设。实验碎片分析证明了一次加工与二次加工分离的特征尺寸。还提出了钻井过程的全局功率平衡，并允许对钻井速度进行预测。它还说明了耗散能密度(钻进强度)不是一个恒定的参数，而是随着尺寸的增大而显著减小。版权所有(C)2002 John Wiley Sons，Ltd.
The drilling comminution is theoretically and experimentally analysed by a fractal approach. An extension of the Third Comminution Theory is developed to evaluate the energy dissipation in the process: it occurs in a fractal domain intermediate between a surface and a volume. The theoretical assumption of a material 'quantum' is experimentally observed. The experimental fragment analysis evidences the characteristic size of separation between primary cutting and secondary milling. A global power balance for the drilling process is also presented and permits the prediction of drilling velocity. It shows also how the dissipation energy density (drilling strength) is not a constant parameter, but decreases considerably with the size scale. Copyright (C) 2002 John Wiley Sons, Ltd.